1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef UI_VIEWS_CONTROLS_SLIDE_OUT_VIEW_H_ 6 #define UI_VIEWS_CONTROLS_SLIDE_OUT_VIEW_H_ 7 8 #include "ui/compositor/layer_animation_observer.h" 9 #include "ui/views/view.h" 10 #include "ui/views/views_export.h" 11 12 namespace views { 13 14 // A View that can be closed by a slide-out touch gesture. 15 class VIEWS_EXPORT SlideOutView : public views::View, 16 public ui::ImplicitAnimationObserver { 17 public: 18 SlideOutView(); 19 virtual ~SlideOutView(); 20 21 protected: 22 // Called when user intends to close the View by sliding it out. 23 virtual void OnSlideOut() = 0; 24 25 // Overridden from views::View. 26 virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE; 27 28 private: 29 enum SlideDirection { 30 SLIDE_LEFT, 31 SLIDE_RIGHT, 32 }; 33 34 // Restores the transform and opacity of the view. 35 void RestoreVisualState(); 36 37 // Slides the view out and closes it after the animation. 38 void SlideOutAndClose(SlideDirection direction); 39 40 // Overridden from ImplicitAnimationObserver. 41 virtual void OnImplicitAnimationsCompleted() OVERRIDE; 42 43 float gesture_scroll_amount_; 44 45 DISALLOW_COPY_AND_ASSIGN(SlideOutView); 46 }; 47 48 } // namespace views 49 50 #endif // UI_VIEWS_CONTROLS_SLIDE_OUT_VIEW_H_ 51